From: "Terrell W. Fritz"
Date: Mon, 23 Apr 2001 19:36:00 -0600
Subject: Re: [TSSP] Time domain modeling
I forgot to mention, I have a Pearson 4100 current monitor (140Hz - 35MHz 1:1) and Pearson 411 (1Hz-20MHz 10:1) current monitor. The Tek 5100 and the new 3012 digital scope that holds 10000 points per channel and sends raw data to the floppy drive. Plus the AE PDX900, a frequency counter, etc. So I can easily drive and measure the small secondary coil I have (tunes around 350kHz) up to 900 watts. The PDX goes from 325 to 375 kHz and has independent frequency control as well as very accurate forward power regulation. It has very low harmonic output distortion as well. So I have a bunch of good toys for finding info for pn1401 impedance questions. I may have gotten a bit carried away in thinking of disruptive coil measurements :-)) when nice calm CW measurements are probably the next step... Some work I did last year with this is at: http://hot-streamer.com/TeslaCoils/MyCoils/CWCoil/CWImpedance.txt However, this data could be greatly improved on and targeted for our project's needs. I usually run the CW coil by driving an ~10 turn primary coil from the PDX. Perhaps I need to drive the base directly for our needs. I have never done that but it should work. http://hot-streamer.com/TeslaCoils/MyCoils/CWCoil/CWDig.jpg http://hot-streamer.com/TeslaCoils/MyCoils/CWCoil/P1280005.jpg A bunch of pictures (some quite pretty) are at: http://hot-streamer.com/TeslaCoils/MyCoils/CWCoil/ Cheers, Terry At 07:37 PM 4/22/2001 -0600, you wrote: >Hi Paul, > >At 10:19 AM 4/22/2001 +0100, you wrote: >snip... >> >>The above is now just a coding exercise, apart from one not-so-minor >>point, we need that function Yload( Vtop), along with some guesses of >>Vdischarge for a given test coil. Yload can be calculated somewhat >>indirectly from measurements of Ibase and Fres, or more directly by >>measurements of Vtop and Itop, for various power levels. >> >snip... > >Vtop(t), Itop(t), Igap(t) sounds like my kind of thing ;-)) > >Here are some papers I have: > >http://hot-streamer.com/TeslaCoils/MyPapers/spark1/sparkgap.html >http://hot-streamer.com/TeslaCoils/MyPapers/topsync/topsync.html >http://hot-streamer.com/TeslaCoils/MyPapers/planant/waveant3.html >http://hot-streamer.com/TeslaCoils/MyPapers/smallar/smallar4.html > >However, these were all written in the mid 1997 to mid 1998 time frame. >Although they may have some interesting qualitative information, I do not >trust them much for any detailed quantitative data. The tools and >techniques then were in their infancy and it was just a main goal to try >and do such stuff at all... > >I can't belive it's been three years since then, but I "know things" now >and have collected a number of new toys for such work. ;-) I will have to >reconfigure the play room a bit but the small coil and all is ready to go. > >http://hot-streamer.com/TeslaCoils/MyCoils/SmallCoil/SmallCoil.htm > >I will start setting stuff up... > >Cheers, > > Terry > > >
Maintainer Paul Nicholson, paul@abelian.demon.co.uk.